#include<stdio.h>

int main(int argc, char *argv)
{
	int num1;
	int flag=1;
	printf("请输入：");
AGAIN:
	if(0 == flag){
		printf("请重新输入：");
	}
	scanf("%d", &num1);
	if(num1>0){
		printf("num1的值是：%d\n",num1);
	}else{
		flag = 0;
		goto AGAIN;
	}
	return 0;
}
